On Tue, Feb 08, 2022 at 10:54:03PM -0800, Stephen Hemminger wrote:
> Both Linux and FreeBSD have same code for creating runtime
> directory and reading sysfs files. Put them in the new lib/eal/unix
> subdirectory.
>
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
LGTM, apart from one minor nit inline below.
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
> ---
> lib/eal/freebsd/eal.c | 88 ---------------------------
> lib/eal/linux/eal.c | 90 ----------------------------
> lib/eal/unix/eal_filesystem.c | 110 ++++++++++++++++++++++++++++++++++
> lib/eal/unix/meson.build | 1 +
> 4 files changed, 111 insertions(+), 178 deletions(-)
> create mode 100644 lib/eal/unix/eal_filesystem.c
>
<snip>
> +
> + /* create the path if it doesn't exist. no "mkdir -p" here, so do it
> + * step by step.
> + */
> + ret = mkdir(tmp, 0700);
> + if (ret < 0 && errno != EEXIST) {
> + RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
> + tmp, strerror(errno));
> + return -1;
> + }
> +
> + ret = mkdir(run_dir, 0700);
> + if (ret < 0 && errno != EEXIST) {
> + RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
> + run_dir, strerror(errno));
> + return -1;
> + }
> +
> + if (eal_set_runtime_dir(run_dir))
> + return -1;
> +
> + return 0;
> +}
Missing a blank line here between the two functions.
> +/* parse a sysfs (or other) file containing one integer value */
> +int
> +eal_parse_sysfs_value(const char *filename, unsigned long *val)
> +{
> + FILE *f;
> + char buf[BUFSIZ];
> + char *end = NULL;
> +
> + if ((f = fopen(filename, "r")) == NULL) {
> + RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
> + __func__, filename);
> + return -1;
> + }
> +
> + if (fgets(buf, sizeof(buf), f) == NULL) {
> + RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
> + __func__, filename);
> + fclose(f);
> + return -1;
> + }
> + *val = strtoul(buf, &end, 0);
> + if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
> + RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
> + __func__, filename);
> + fclose(f);
> + return -1;
> + }
> + fclose(f);
> + return 0;
> +}
> diff --git a/lib/eal/unix/meson.build b/lib/eal/unix/meson.build
> index e3ecd3e956b2..a22ea7cabc46 100644
> --- a/lib/eal/unix/meson.build
> +++ b/lib/eal/unix/meson.build
> @@ -6,5 +6,6 @@ sources += files(
> 'eal_unix_memory.c',
> 'eal_unix_timer.c',
> 'eal_firmware.c',
> + 'eal_filesystem.c',
> 'rte_thread.c',
> )
> --
> 2.34.1
>
@@ -72,62 +72,6 @@ struct lcore_config lcore_config[RTE_MAX_LCORE];
/* used by rte_rdtsc() */
int rte_cycles_vmware_tsc_map;
-static const char *default_runtime_dir = "/var/run";
-
-int
-eal_create_runtime_dir(void)
-{
- const char *directory = default_runtime_dir;
- const char *xdg_runtime_dir = getenv("XDG_RUNTIME_DIR");
- const char *fallback = "/tmp";
- char run_dir[PATH_MAX];
- char tmp[PATH_MAX];
- int ret;
-
- if (getuid() != 0) {
- /* try XDG path first, fall back to /tmp */
- if (xdg_runtime_dir != NULL)
- directory = xdg_runtime_dir;
- else
- directory = fallback;
- }
- /* create DPDK subdirectory under runtime dir */
- ret = snprintf(tmp, sizeof(tmp), "%s/dpdk", directory);
- if (ret < 0 || ret == sizeof(tmp)) {
- RTE_LOG(ERR, EAL, "Error creating DPDK runtime path name\n");
- return -1;
- }
-
- /* create prefix-specific subdirectory under DPDK runtime dir */
- ret = snprintf(run_dir, sizeof(run_dir), "%s/%s",
- tmp, eal_get_hugefile_prefix());
- if (ret < 0 || ret == sizeof(run_dir)) {
- RTE_LOG(ERR, EAL, "Error creating prefix-specific runtime path name\n");
- return -1;
- }
-
- /* create the path if it doesn't exist. no "mkdir -p" here, so do it
- * step by step.
- */
- ret = mkdir(tmp, 0700);
- if (ret < 0 && errno != EEXIST) {
- RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
- tmp, strerror(errno));
- return -1;
- }
-
- ret = mkdir(run_dir, 0700);
- if (ret < 0 && errno != EEXIST) {
- RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
- run_dir, strerror(errno));
- return -1;
- }
-
- if (eal_set_runtime_dir(run_dir))
- return -1;
-
- return 0;
-}
int
eal_clean_runtime_dir(void)
@@ -138,38 +82,6 @@ eal_clean_runtime_dir(void)
return 0;
}
-/* parse a sysfs (or other) file containing one integer value */
-int
-eal_parse_sysfs_value(const char *filename, unsigned long *val)
-{
- FILE *f;
- char buf[BUFSIZ];
- char *end = NULL;
-
- if ((f = fopen(filename, "r")) == NULL) {
- RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
- __func__, filename);
- return -1;
- }
-
- if (fgets(buf, sizeof(buf), f) == NULL) {
- RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
- __func__, filename);
- fclose(f);
- return -1;
- }
- *val = strtoul(buf, &end, 0);
- if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
- RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
- __func__, filename);
- fclose(f);
- return -1;
- }
- fclose(f);
- return 0;
-}
-
-
/* create memory configuration in shared/mmap memory. Take out
* a write lock on the memsegs, so we can auto-detect primary/secondary.
* This means we never close the file while running (auto-close on exit).
@@ -86,65 +86,6 @@ struct lcore_config lcore_config[RTE_MAX_LCORE];
/* used by rte_rdtsc() */
int rte_cycles_vmware_tsc_map;
-int
-eal_create_runtime_dir(void)
-{
- const char *directory;
- char run_dir[PATH_MAX];
- char tmp[PATH_MAX];
- int ret;
-
- /* from RuntimeDirectory= see systemd.exec */
- directory = getenv("RUNTIME_DIRECTORY");
- if (directory == NULL) {
- /*
- * Used standard convention defined in
- * XDG Base Directory Specification and
- * Filesystem Hierarchy Standard.
- */
- if (getuid() == 0)
- directory = "/var/run";
- else
- directory = getenv("XDG_RUNTIME_DIR") ? : "/tmp";
- }
-
- /* create DPDK subdirectory under runtime dir */
- ret = snprintf(tmp, sizeof(tmp), "%s/dpdk", directory);
- if (ret < 0 || ret == sizeof(tmp)) {
- RTE_LOG(ERR, EAL, "Error creating DPDK runtime path name\n");
- return -1;
- }
-
- /* create prefix-specific subdirectory under DPDK runtime dir */
- ret = snprintf(run_dir, sizeof(run_dir), "%s/%s",
- tmp, eal_get_hugefile_prefix());
- if (ret < 0 || ret == sizeof(run_dir)) {
- RTE_LOG(ERR, EAL, "Error creating prefix-specific runtime path name\n");
- return -1;
- }
-
- /* create the path if it doesn't exist. no "mkdir -p" here, so do it
- * step by step.
- */
- ret = mkdir(tmp, 0700);
- if (ret < 0 && errno != EEXIST) {
- RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
- tmp, strerror(errno));
- return -1;
- }
-
- ret = mkdir(run_dir, 0700);
- if (ret < 0 && errno != EEXIST) {
- RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
- run_dir, strerror(errno));
- return -1;
- }
-
- if (eal_set_runtime_dir(run_dir))
- return -1;
-
- return 0;
-}
int
eal_clean_runtime_dir(void)
@@ -232,37 +173,6 @@ eal_clean_runtime_dir(void)
return -1;
}
-/* parse a sysfs (or other) file containing one integer value */
-int
-eal_parse_sysfs_value(const char *filename, unsigned long *val)
-{
- FILE *f;
- char buf[BUFSIZ];
- char *end = NULL;
-
- if ((f = fopen(filename, "r")) == NULL) {
- RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
- __func__, filename);
- return -1;
- }
-
- if (fgets(buf, sizeof(buf), f) == NULL) {
- RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
- __func__, filename);
- fclose(f);
- return -1;
- }
- *val = strtoul(buf, &end, 0);
- if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
- RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
- __func__, filename);
- fclose(f);
- return -1;
- }
- fclose(f);
- return 0;
-}
-
/* create memory configuration in shared/mmap memory. Take out
* a write lock on the memsegs, so we can auto-detect primary/secondary.
new file mode 100644
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation.
+ * Copyright(c) 2012-2014 6WIND S.A.
+ */
+
+#include <errno.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <rte_common.h>
+#include <rte_log.h>
+
+#include "eal_private.h"
+#include "eal_filesystem.h"
+
+int
+eal_create_runtime_dir(void)
+{
+ const char *directory;
+ char run_dir[PATH_MAX];
+ char tmp[PATH_MAX];
+ int ret;
+
+ /* from RuntimeDirectory= see systemd.exec */
+ directory = getenv("RUNTIME_DIRECTORY");
+ if (directory == NULL) {
+ /*
+ * Used standard convention defined in
+ * XDG Base Directory Specification and
+ * Filesystem Hierarchy Standard.
+ */
+ if (getuid() == 0)
+ directory = "/var/run";
+ else
+ directory = getenv("XDG_RUNTIME_DIR") ? : "/tmp";
+ }
+
+ /* create DPDK subdirectory under runtime dir */
+ ret = snprintf(tmp, sizeof(tmp), "%s/dpdk", directory);
+ if (ret < 0 || ret == sizeof(tmp)) {
+ RTE_LOG(ERR, EAL, "Error creating DPDK runtime path name\n");
+ return -1;
+ }
+
+ /* create prefix-specific subdirectory under DPDK runtime dir */
+ ret = snprintf(run_dir, sizeof(run_dir), "%s/%s",
+ tmp, eal_get_hugefile_prefix());
+ if (ret < 0 || ret == sizeof(run_dir)) {
+ RTE_LOG(ERR, EAL, "Error creating prefix-specific runtime path name\n");
+ return -1;
+ }
+
+ /* create the path if it doesn't exist. no "mkdir -p" here, so do it
+ * step by step.
+ */
+ ret = mkdir(tmp, 0700);
+ if (ret < 0 && errno != EEXIST) {
+ RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
+ tmp, strerror(errno));
+ return -1;
+ }
+
+ ret = mkdir(run_dir, 0700);
+ if (ret < 0 && errno != EEXIST) {
+ RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
+ run_dir, strerror(errno));
+ return -1;
+ }
+
+ if (eal_set_runtime_dir(run_dir))
+ return -1;
+
+ return 0;
+}
+/* parse a sysfs (or other) file containing one integer value */
+int
+eal_parse_sysfs_value(const char *filename, unsigned long *val)
+{
+ FILE *f;
+ char buf[BUFSIZ];
+ char *end = NULL;
+
+ if ((f = fopen(filename, "r")) == NULL) {
+ RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
+ __func__, filename);
+ return -1;
+ }
+
+ if (fgets(buf, sizeof(buf), f) == NULL) {
+ RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
+ __func__, filename);
+ fclose(f);
+ return -1;
+ }
+ *val = strtoul(buf, &end, 0);
+ if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
+ RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
+ __func__, filename);
+ fclose(f);
+ return -1;
+ }
+ fclose(f);
+ return 0;
+}
@@ -6,5 +6,6 @@ sources += files(
'eal_unix_memory.c',
'eal_unix_timer.c',
'eal_firmware.c',
+ 'eal_filesystem.c',
'rte_thread.c',
)